JPS60246754A - Operation table - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an operating table on which a patient is placed on a surgical table and surgery or treatment is performed.

Main) Prior Art One of the important conditions for the operating table is that the surgical tape can move up and down. For this purpose, the support section on which the surgical tape is mounted on the fixed base is usually configured to be expandable and contractible. However, when the vertical range of the surgical table is large, for example when it is necessary to move it from a low position such as in surgery using a microscope to a high position such as in general surgery, a tiltable arm ( A swinging arm) system is advantageous. However, in such a swinging arm system, the table moves horizontally as well as vertically, which is very inconvenient because the field of view of the microscope goes out of view as the tape μ moves up and down.

Further, as the table moves up and down, the doctor and the like must also move laterally, which is inconvenient.

(f) Purpose The present invention aims to provide a surgical table in which the surgical table can move up and down t in the vertical direction and can have a large amount of vertical movement (lift).

According to the present invention, two sets of parallel four-way perspective link mechanisms of equal size are connected in a dogleg shape, the lower end link of the doglegged link mechanism is connected to the fixed base side, and the upper end link is connected to the fixed base side. The link is connected to the surgical table to form a mounting mechanism. A drive mechanism that tilts the lower parallelogram link mechanism at an arbitrary angle, and a drive mechanism that tilts the lower parallelogram link mechanism to a lower parallelogram with an inclination amount twice as much as the inclination amount of the lower parallelogram link mechanism. It has an interlocking tilt drive mechanism that tilts in conjunction with the shaped link mechanism. Therefore, the plane parallelogram link mechanisms on the lower side and the upper side are both configured to be inclined at the same angle from the horizontal state, so that the surgical tape moves up and down in the vertical direction.

(e) Examples DESCRIPTION OF THE PREFERRED EMBODIMENTS Illustrated embodiments of the invention will be described below.

FIG. 1 is a diagram schematically showing the basic configuration of the present invention. In the figure, 1 indicates a fixed base of a surgical table, and 2 indicates a surgical tape /I/ (top plate). 3.4 are pins pivotally supported by the fixed base 1, and links 5.6 are connected to each other so as to be tiltable (swingable) via these pins 3.4.

At the upper end of each link 5.6 there is a pin 10. A link 12 is connected via l'1. The length between pins 3 and 4 is equal to that between pins 10.11, and the links 5.6 are also equal in length, and the fixed base 1 also serves as a link, so these links 1.5.6.12 and pin 3.
4.10.11, constitute a set of parallelogram link mechanisms (lower side).

Further, at the upper end of each link 5.6 there is a pin 10.1.
1 through which links 13 and 14 are connected, and this link 1
The upper end of 3.14 is connected to the underside of the surgical tape A/2 via a pin 15.16. This link 13,1
4 also links 5.4 via pins 10,11 and 15,16.
6 and surgical tape/L/2 so as to be tiltable.

And in this case too, between pins 15 and 16 are pins 10 and -11.
Further, links 13 and 14 are equal in length to link 5.
Since surgical tape /L/2 has the same length as 6 and also serves as a link, these links 2.12.13.14
Another set of parallelogram link mechanisms (on the upper side) having the same size is constituted by pins 1O1ll and 15.16.

And these two sets of parallelogram link mechanisms are link 12
and pins 10 and 11, and are connected in a dogleg shape via these. These links 12 and the pins 10 and 11 can also be connected without serving as both, but in that case, it is necessary to connect both the links integrally. Also, the links 1 and 2 can be provided without also serving as the fixed base 1 or the surgical tape/L'2, but in that case, each link is firmly fixed to the fixed base 1 or the surgical table 2. There is a need to.

As described above, the present invention is characterized in that a surgical table is mounted on a fixed base via a link mechanism formed by connecting two sets of parallelogram link mechanisms of equal size in a dogleg shape. be.

In the above configuration, a sprocket 17 is further attached coaxially with the pin 3 and is fixed to the fixed base 1 via a bolt 20, and a sprocket 17 is fixed to the link 13 coaxially with the pin 10. sprocket 18 is attached. The diameter ratio of these two sprockets 1f and 18 is set to 2=1, and a chain (stripe body) 19 is wound between both sprockets 17 and 18.

8 is a cylinder mechanism (pneumatic cylinder or hydraulic cylinder) that is swingably interposed between pin 7 on link 6 and pin 9 on fixed base q, and its output rond is expanded and contracted. The link 6 is tilted relative to the fixed base 1. The inclination of the link 6 is the inclination of the entire lower parallelogram link mechanism, and this cylinder mechanism 8 is an example of an inclination drive mechanism. The parallelogram link mechanism is tilted at an arbitrary angle depending on the amount of extension of the output rod of the cylinder mechanism 8.

When the lower parallelogram link mechanism is tilted to the state shown by the directional copper wire of arrow A (temporarily 300 degrees) due to the extension of the output rod of the cylinder mechanism 8, the upper parallelogram link mechanism is connected to the sprocket fixed to it. Since the chain 19 is wound around the tin rocket 17 fixed to the fixed base 1, the link 13 tilts twice as much as 30' with respect to the link 5. Therefore, as a result, the upper parallelogram link mechanism is also 30° relative to the position before displacement.
0 tilt, and the trajectory of pins 15 and 16 is pin 3.
4, the surgical cheagle 2 is displaced upward from the same position in the horizontal direction to the position 2' t shown by the two-point # line.
Move this.

The present invention is not limited to the illustrated embodiment (it includes various modified embodiments).

First, the arrangement of each set of parallelogram link mechanisms is as follows.
In the case of the figure, links 1, 2, and 12 are placed parallel (horizontally) to the fixed base 1 and surgical tape/I/2, but these links are placed in the vertical (vertical) direction as shown in Figure 2. It can also be placed in In Figure 2, the tilt drive mechanism and the drive mechanism that interlocks and tilts the upper parallelogram link mechanism with twice the tilt amount are not shown, but they are the same parts or parts with the same function as in Figure 1. are marked with the same numerals.

Further, as the tilt drive mechanism, a system in which the output of an electric motor is decelerated and directly transmitted, a cam mechanism, a worm gear mechanism, etc. can be used in addition to the cylinder mechanism.

As for the interlocking tilting drive mechanism, it is possible not only to combine large and small sprockets and chains, but also to use an electric drive system in conjunction with the tilting drive mechanism so that the gears can be tilted in conjunction with each other. The illustrated example has the advantage of being simple in structure, functioning accurately, and being economical.

As a method similar to the illustrated example, it is also possible to connect with links instead of chains, but in that case, the link connection position (radius) to the Guri (instead of the tin rocket) is such that the fixed base side is an upper parallelogram. It needs to be at twice the position on the link mechanism side. In this case, the surgical table can move up and down in the vertical direction within a certain range of inclination angles.

In the illustrated example, the link mechanism is planar, but in reality it requires a certain depth, so each link should be about the width of the table, or another dog-legged link mechanism should be installed in parallel in the depth direction. It is practical to connect both with pins.

(f) Effects The surgical table of the present invention can vertically move the surgical tape and has a large vertical movement range (lift), allowing the table to be displaced from a low position to a high position at the same horizontal position. Therefore, no inconvenience occurs even in surgeries using a microscope.

Moreover, since it is a dogleg-shaped link mechanism, the length of the link can be short for large lifts. Furthermore, the dogleg-shaped link mechanism provides a large space below the surgical table, which has the advantage of making it easy to place imaging equipment in this space, for example, when performing fluoroscopic imaging of a surgical patient.

[Brief explanation of drawings]

FIG. 1 is a diagram schematically showing the basic structure of an operating table according to the present invention, and FIG. 2 is a diagram schematically showing a modified embodiment. l...Fixed base, 2...Surgical table, 3.4.
7,9.10.11.15.16... pin, 5.6.
12.13.14... Link, 8... Cylinder mechanism, 17.18... Sprocket, 19-... Chain, 20... Bolt.

Claims (1)

[Claims] The surgical table is mounted on a fixed base via a link mechanism formed by connecting two sets of parallelogram link mechanisms of equal size in a dogleg shape, and the lower side of the dogleg link mechanism A tilt drive mechanism that tilts the quadrilateral link mechanism at an arbitrary angle with respect to a fixed base; An operating table characterized in that it is also equipped with an interlocking tilt drive mechanism that tilts in conjunction with a parallelogram link mechanism.